Method and system for optimizing download and instantaneous viewing of media files

ABSTRACT

Methods and arrangements for replacing segments or portions of a media file that was received via adaptive streaming or other transfer mechanism, to obtain a media file for local storage and further playback as if it came from a download. This maximizes the experience of both instant viewing and delayed viewing, and additionally provides a capability to extend the viewing experience to in-home streaming and copying to other devices. Accordingly, there is provided herein a capability to take advantage of adaptive streaming to provide a highly reliable mechanism for consumers to view media in real-time transmission, and also to obtain a resultant, locally stored media file of high quality. There is further provided herein a capability to obtain complete copies of media at different quality levels. Moreover, embodiments of the present invention facilitate adaptive streaming and copying within the home environment.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation (divisional) application of U.S.patent application Ser. No. 12/573,093, entitled “Method and System forOptimizing Download and Instantaneous Viewing of Media Files”, filed onOct. 2, 2009, the contents of which are fully incorporated by referenceherein.

BACKGROUND

Internet-delivered media takes two primary forms today. Download, orprogressive download (referred to hereinafter simply as “download”), isa method to deliver a media file for local storage and playback to amedia application or device (i.e., a receiving device), while streamingis a method to deliver and view a media file in real-time withoutstoring it on a local receiving device. Media may also be delivered vialocal copy from physical media such as a portable drive, an opticaldisc, or another arrangement.

In the download scenario, a media file is downloaded to the receivingdevice at the quality (e.g., resolution, bit rate, etc) of theoriginating file. While it is possible to view the media file as it isdownloading, delivery conditions may affect playback performance. Forexample, changes in network bandwidth, transmission delays or packetloss will decrease the effective download rate, forcing the receivingdevice to pause on playback until enough media is available again in theplayback buffer.

Streaming employs real-time communication protocols to provide anuninterrupted viewing experience. However, streaming delivery is alsovulnerable to changes in network bandwidth, transmission delays, andpacket loss that can negatively impact playback and incur bufferingproblems. Furthermore, streaming protocols are designed to not provide alocal copy of a media file to a consumer for further local storage andplayback.

“Adaptive streaming” has been recently introduced to overcome theshortcomings of Internet delivery. Adaptive streaming allows differentquality levels (e.g. different bit rates, or resolutions) of the samemedia file to be sent to a receiving device during the streaming asconditions change over time, depending on a number of factors, includingnet measured bandwidth, transmission delay, and available CPU resourcesof the receiving device. Among two primary approaches to adaptivestreaming, one makes available multiple versions of a streamable mediafile at different quality levels, with the receiving device “jumping”from one media source to another in response to specific criteria. Inthe second approach, a media file is first divided into short segments(e.g. 3 seconds of video) before being encoded at different qualitylevels, and the receiving device can then request a subsequent portionat an appropriate bit rate depending on a similar set of criteria.(Media file “segments”, as broadly discussed and understood herein,could alternatively be termed “blocks” or “portions”.) In bothapproaches, if the delivery conditions are good the receiving devicewill receive media at the highest available quality level while ifdelivery conditions degrade, the receiving device will receive media ata lower quality level. In a typical scenario, the receiving device willplayback multiple quality levels of the same media file over a period oftime, since the network and device CPU conditions (and any othercriteria taken into account) will vary over the same time.

While adaptive streaming provides a manner for playing back media filesmore reliably in a variable delivery network such as the Internet, it isnot currently employed for transmitting a file to a consumer for localstorage and further playback. While a streamed media file could well bestored for that purpose, it would almost inevitably contain segments ofmixed quality throughout, and this clearly would fall short of a likelyconsumer expectation of a consistently high quality media file whenplaying back a downloaded file from a device.

Accordingly, a need has been recognized in connection with combining thespecific advantages of both streaming and download, in such a way thatconsumers have the best experience possible in all consumptionscenarios, whether that be streaming or download.

BRIEF SUMMARY

Broadly contemplated, in accordance with at least one presentlypreferred embodiment of the present invention, are methods andarrangements for replacing segments or portions of a media file that wasreceived via adaptive streaming, to obtain a media file for localstorage and further playback as if it came from a download. Thismaximizes the experience of both instant viewing and delayed viewing,and additionally provides a capability to extend the viewing experienceto in-home streaming and copying to other devices.

Accordingly, there is provided herein a capability to take advantage ofadaptive streaming to provide a highly reliable mechanism for consumersto view media in real-time transmission, and also to obtain a resultant,locally stored media file of high quality. By using a backgrounddownload process, media file segments can be examined in memory as aresult of the adaptive streaming process and segments that are not ofthe desired quality can be selectively requested and replaced.

There is further provided herein a capability to obtain complete copiesof media at different quality levels. Moreover, embodiments of thepresent invention facilitate adaptive streaming and copying within thehome environment.

In summary, one aspect of the invention provides a system comprising: amedia device comprising a first media device and a second media device;said first media device comprising one or more processors andinstructions executable by the one or more processors to: read amulti-resolution copy of an initial media file adaptively streamed tothe first media device and comprising file segments each having aresolution quality, the file segments comprising a first file segmenthaving a first resolution quality and the second segment having a secondresolution quality, the second resolution quality being different fromthe first resolution quality; employ resolution quality information tothe file segments to obtain at least one replacement segment for theinitial media file and to modify the initial media file such that thefirst file segment retains the first resolution quality and the at leastone second file segment is replaced to match the first resolutionquality; store a modified version of the initial media file as a secondmedia file comprising file segments all having the first resolutionquality; and copy to the second media device a media file comprising atleast one file segment from the read media file corresponding to asingle predetermined audio visual quality.

Another aspect of the invention provides a method, comprising: reading,at a first media device, a multi-resolution copy of an initial mediafile adaptively streamed to the first media device and comprising filesegments each having a resolution quality, the file segments comprisinga first file segment having a first resolution quality and the secondsegment having a second resolution quality, the second resolutionquality being different from the first resolution quality; employing, atthe first media device, resolution quality information to the filesegments to obtain at least one replacement segment for the initialmedia file and to modify the initial media file such that the first filesegment retains the first resolution quality and the at least one secondfile segment is replaced to match the first resolution quality; storing,at the first media device, a modified version of the initial media fileas a second media file comprising file segments all having the firstresolution quality; and copying, to a second media device, a media filecomprising at least one file segment from the read media filecorresponding to a single predetermined audio visual quality.

A further aspect of the invention provides a computer program productcomprising: a computer readable storage medium having computer readableprogram code embodied therewith, the computer readable program codecomprising: computer program code configured to read, at a first mediadevice, a multi-resolution copy of an initial media file adaptivelystreamed to the first media device and comprising file segments eachhaving a resolution quality, the file segments comprising a first filesegment having a first resolution quality and the second segment havinga second resolution quality, the second resolution quality beingdifferent from the first resolution quality; computer program codeconfigured to employ, at the first media device, resolution qualityinformation to the file segments to obtain at least one replacementsegment for the initial media file and to modify the initial media filesuch that the first file segment retains the first resolution qualityand the at least one second file segment is replaced to match the firstresolution quality; computer program code configured to store, at thefirst media device, a modified version of the initial media file as asecond media file comprising file segments all having the firstresolution quality; and computer program code configured to copy, to asecond media device, a media file comprising at least one file segmentfrom the read media file corresponding to a single predetermined audiovisual quality.

For a better understanding of exemplary embodiments of the invention,together with other and further features and advantages thereof,reference is made to the following description, taken in conjunctionwith the accompanying drawings, and the scope of the claimed embodimentsof the invention will be pointed out in the appended claims.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 illustrates a computer system.

FIG. 2 schematically depicts an arrangement for providing media contentto a receiving device.

FIG. 3 schematically depicts a first variant arrangement for providingmedia content to a receiving device.

FIG. 4 schematically depicts a second variant arrangement for providingmedia content to a receiving device.

DETAILED DESCRIPTION

It will be readily understood that the components of the embodiments ofthe invention, as generally described and illustrated in the figuresherein, may be arranged and designed in a wide variety of differentconfigurations in addition to the described presently preferredembodiments. Thus, the following more detailed description of theembodiments of the invention, as represented in the figures, is notintended to limit the scope of the embodiments of the invention, asclaimed, but is merely representative of selected presently preferredembodiments of the invention.

Reference throughout this specification to “one embodiment” or “anembodiment” (or the like) means that a particular feature, structure, orcharacteristic described in connection with the embodiment is includedin at least one embodiment of the invention. Thus, appearances of thephrases “in one embodiment” or “in an embodiment” or the like in variousplaces throughout this specification are not necessarily all referringto the same embodiment.

Furthermore, the described features, structures, or characteristics maybe combined in any suitable manner in one or more embodiments. In thefollowing description, numerous specific details are provided to give athorough understanding of embodiments of the invention. One skilled inthe relevant art will recognize, however, that the various embodimentsof the invention can be practiced without one or more of the specificdetails, or with other methods, components, materials, etc. In otherinstances, well-known structures, materials, or operations are not shownor described in detail to avoid obscuring aspects of the invention.

The illustrated embodiments of the invention will be best understood byreference to the drawings/figures. The following description is intendedonly by way of example and simply illustrates certain selected presentlypreferred embodiments of the invention as claimed herein.

Regarding the figures, the flowchart and block diagrams in the figuresillustrate the architecture, functionality, and operation of possibleimplementations of systems, methods and computer program productsaccording to various embodiments of the invention. In this regard, eachblock in the flowchart or block diagrams may represent a module,segment, or portion of code, which comprises one or more executableinstructions for implementing the specified logical function(s). Itshould also be noted that, in some alternative implementations, thefunctions noted in the block may occur out of the order noted in thefigures. For example, two blocks shown in succession may, in fact, beexecuted substantially concurrently, or the blocks may sometimes beexecuted in the reverse order, depending upon the functionalityinvolved. It will also be noted that each block of the block diagramsand/or flowchart illustration, and combinations of blocks in the blockdiagrams and/or flowchart illustration, can be implemented by specialpurpose hardware-based systems that perform the specified functions oracts, or combinations of special purpose hardware and computerinstructions.

The description now turns to the figures and select, presently preferredembodiments of the invention will be described. The followingdescription of various embodiments of the invention is presented tohighlight certain aspects of the invention, and the scope of the claimedembodiments of the invention will be pointed out in the appended claims.

Referring now to FIG. 1, there is depicted a block diagram of anillustrative embodiment of a computer system 100. The illustrativeembodiment depicted in FIG. 1 may represent a device such as a gameconsole, a set top box, a mobile device, a laptop, or a desktop orworkstation computer. As is apparent from the description, however,embodiments of the invention may be implemented in any appropriatelyconfigured device or computing system, as described herein.

As shown in FIG. 1, computer system 100 includes at least one systemprocessor 42, which is coupled to a Read-Only Memory (ROM) 40 and asystem memory 46 by a processor bus 44. System processor 42, which maycomprise one of the AMD line of processors produced by AMD Corporationor a processor produced by INTEL Corporation is a general-purposeprocessor that executes boot code 41 stored within ROM 40 at power-onand thereafter processes data under the control of an operating systemand application software stored in system memory 46. System processor 42is coupled via processor bus 44 and host bridge 48 to PeripheralComponent Interconnect (PCI) local bus 50.

PCI local bus 50 supports the attachment of a number of devices,including adapters and bridges. Among these devices is network adapter66, which interfaces computer system 100 to a LAN, and graphics adapter68, which interfaces computer system 100 to display 69. Communication onPCI local bus 50 is governed by local PCI controller 52, which is inturn coupled to non-volatile random access memory (NVRAM) 56 via memorybus 54. Local PCI controller 52 can be coupled to additional buses anddevices via a second host bridge 60.

Computer system 100 further includes Industry Standard Architecture(ISA) bus 62, which is coupled to PCI local bus 50 by ISA bridge 64.Coupled to ISA bus 62 is an input/output (I/O) controller 70, whichcontrols communication between computer system 100 and attachedperipheral devices such as a keyboard, mouse, serial and parallel ports,etc. A disk controller 72 connects a disk drive 99 with PCI local bus50. The USB Bus and USB Controller (not shown) are part of the Local PCIcontroller (52).

As illustrated in FIG. 2, in accordance with at least one presentlypreferred embodiment of the present invention, an originating mediaserver in the form of an adaptive streaming source 202 may preferablyprovide, via a network 204, a partial multi-resolution copy 206 of amedia file to a receiving device 200. A media file may also betransferred via local copy to a receiving device 200, e.g., prior to thefile being read. Receiving device 200 could be a media device that takesany of a very wide variety of conceivable forms, which may preferablyinclude (but not be limited to) a mobile device, a gaming console, a settop box, a desktop or a laptop computer, including a computer systemsimilar or analogous to that indicated at 100 in FIG. 1. Source 202 canpreferably include individual sources for segments of high, medium andlow resolution. As such, the partial copy 206 may be composed of high,medium and low resolution segments (H, M, L, respectively), as shown.(Of course, these three levels of resolution are provided herein merelyby way of example. A greater number of levels of resolution is of courseconceivable, such as levels of resolution intermediate to those commonlyunderstood as “high”, “medium” and “low”.)

Once the streaming or transfer is completed, any segments not of highquality can be provided to the receiving device by a secondary source210 to make stored media file 208. (This action may also be undertakenin parallel to the streaming [206] if available bandwidth would allow.)In this manner, while the instant streaming (206) can be adequate forreal-time viewing if so desired by a user, the user may also now retaina copy of a higher-quality file on the device 200 for viewing at a latertime. The secondary source 210 can conceivably take any of a very widevariety of forms, including (but not limited to) the originating source202 itself, a singular source that is separate from the originatingsource 202, or a distributed source as could be the case with connectedpeer devices. The process of providing high quality segments to replacelower quality segments (transitioning from 206 to 208) can be broughtabout in any of a variety of ways. For instance, the receiving device200 may request the “missing” high-quality segments, or the originatingsource 202 could proactively provide those segments and/or direct adifferent device (e.g., a separate secondary source 210) to send thosesegments.

It is conceivable to further employ an indexing mechanism (or indexer)as an arrangement to convey information about all of the segments beingdownloaded to other receiving devices. The indexer keeps a record of theinformation about any or all of the segments being downloaded, such asthe duration, position and bit rate of the segments. The indexer maystore the indexed information in memory or in an indexing file 206 a orother suitable medium to convey information about the segments to otherreceiving devices. The indexer could be particularly useful ifcontaining information at least about the “missing” segments, or thenon-high resolution segments (in 206) that are to be replaced (at 208).Further, the indexed information (e.g., as can be provided in index file206 a) may be created by the originating source 202 or the receivingdevice 200. In the latter case, the indexed information may be employedby the receiving device 200 to request the missing segments from theoriginating source 202, or the indexed information may be sent to theoriginating source 202, which would then deliver the missing (highresolution) segments to the receiving device 200 (e.g., directly or viaa third party).

Alternatives to an index file could replicate a similar function. Forinstance, the media file itself (being downloaded) could have anidentifier (explicit or derived) in each portion that declares or marksthe resolution of that portion. This information could be requested orsent to a secondary source 210 or written to disk as an index file.However, an advantage to employing an index file 206 a as discussedabove is that in conveying information about portion types/resolutions,it is easily transportable, accessible and transferable

A variant embodiment of the present invention is illustrated in FIG. 3,where reference numerals identifying similar components with respect toFIG. 2 are advanced by 100. Here, media content is preferably providedto receiving device 300 as one file but then modified and stored asthree files 308 a/b/c, corresponding to high, medium and low resolutionfiles, respectively. (Again, the provision of three files and levels ofresolution is shown here merely by way of illustrative andnon-restrictive example, wherein additional streams of different, suchas intermediate, resolution can certainly be provided.) Accordingly, thereceiving device 300 ends up storing one copy of the media file for eachof the three resolutions. Essentially, for each media file 308 a/b/c,the process for restoring “missing” segments can be the same asdescribed with respect to FIG. 2, except the process would now becarried out for each of the different levels of resolution.

By way of the embodiment of FIG. 3, the receiving device 300 can becomesomething of a “base” source of adaptive streaming for in-homedistribution to other devices, in the context of a home network whichmay have variable bandwidth, using the same adaptive streamingtechniques described earlier. Such bandwidth variations may be due tothe inherent network (e.g. a wireless network), other activity on thenetwork, activity on the receiving device or the destination device orboth, and so on). Similar principles could be applied here as discussedabove with relation to FIG. 2, wherein the receiving device 300 may bethought of as an “originating source” [as at 202 in FIG. 2], albeitpossibly limited by a lower processing power CPU, or other limitations,as compared to a typical originating source.

In a further refinement of the embodiment of FIG. 3, receiving device300 could copy one of the media files 308 a/b/c to a destination device312 (as opposed to streaming the file) at a resolution which is mostappropriate for the destination device. Thus, in as much as thereceiving device 300 will have copies of the media file in differentresolutions (e.g., H/M/L), second application of this particular variantwherein all segments of all resolutions are filled is one by which thereceiving device copies the media file to the destination device 312(instead of streaming it) at a resolution which is optimal for thatdestination device 312. As such, receiving device 300 could preferablyretain information about capabilities of a destination device 312 (e.g.,whether the latter is a portable player, PC, network attached storage[NAS], etc) and determine, as such, which media file 308 a/b/c of whichresolution would be appropriate for the destination device 312. Such aselection process could, e.g., be user-driven (i.e., the user woulddirectly select which file he/she wants to transfer) or the processcould be based on either an implicit deterministic process or anexplicit choice based on pre-set device preference (explicit) settings.

A second variant embodiment of the present invention is illustrated inFIG. 4, where reference numerals identifying similar components withrespect to FIGS. 2 and 3 are advanced by a multiple of 100. In thiscase, the receiving device 400 receives media file segments of variablequality or bit rates (406) and copies the segments corresponding to oneparticular resolution (here, medium or “M”) to another destinationdevice (e.g., portable device) 412 in the form of a “partial” media file408 a. In other words, the copied media file 408 a is “partial” in thatit contains solely segments of one given resolution, but does not haveall segments of the original media file 406 (and also may preferablycontain a copied version 406 b of the index file 406 a). The destinationdevice 412 may then preferably receive any and all “missing” media filesegments (at the resolution associated with or desired for destinationdevice 412) using a process such as that contemplated hereinabove for areceiving device 200/300 in either or both of FIGS. 2 and 3. The“portion filling” process can be undertaken whenever the “partial” mediafile 408 a is copied over to destination device 412, or may be done witha delay or responsive to a predetermined condition. This thus allows forautomated synchronization, real time synchronization and/or parallelsynchronization of copies of the original media file 406. A very wide avariety of processes for “portion filling” are conceivable. Suchprocesses can act independently and can serve to control the analysis,requesting and filling in of necessary segments per resolution.Depending on settings, opportunity and other factors, download may ormay not take place immediately, and the process indeed could vary fromone download to another, or be governed by factors such ascharacteristics of the device CPU and network.

By way of another variant, which can be applied to the embodimentsdiscussed hereinabove and/or conceivably to a very wide range of otherembodiments, it is conceivable to download a media file of a givenquality, e.g. of high quality, and then transform the same into a fileof medium or low quality merely by degrading the high quality file, viaessentially any suitable mechanism, to obtain the file of medium or lowquality. This of course can also apply to mere segments of a downloadedhigh (or higher) quality file as opposed to a file in its entirety. Suchactions would obviate the need to download an entire new media filewhich itself would contain the desired medium or low quality segments.

As will be appreciated by one skilled in the art, aspects of theinvention may be embodied as a system, method or computer programproduct. Accordingly, aspects of the invention may take the form of anentirely hardware embodiment, an entirely software embodiment (includingfirmware, resident software, micro-code, etc.) or an embodimentcombining software and hardware aspects that may all generally bereferred to herein as a “circuit,” “module” or “system.” Furthermore,aspects of the invention may take the form of a computer program productembodied in one or more computer readable medium(s) having computerreadable program code embodied thereon.

Any combination of one or more computer readable medium(s) may beutilized. The computer readable medium may be a computer readable signalmedium or a computer readable storage medium. A computer readablestorage medium may be, for example, but not limited to, an electronic,magnetic, optical, electromagnetic, infrared, or semiconductor system,apparatus, or device, or any suitable combination of the foregoing. Morespecific examples (a non-exhaustive list) of the computer readablestorage medium would include the following: an electrical connectionhaving one or more wires, a portable computer diskette, a hard disk, arandom access memory (RAM), a read-only memory (ROM), an erasableprogrammable read-only memory (EPROM or Flash memory), an optical fiber,a portable compact disc read-only memory (CD-ROM), an optical storagedevice, a magnetic storage device, or any suitable combination of theforegoing. In the context of this document, a computer readable storagemedium may be any tangible medium that can contain, or store a programfor use by or in connection with an instruction execution system,apparatus, or device.

A computer readable signal medium may include a propagated data signalwith computer readable program code embodied therein, for example, inbaseband or as part of a carrier wave. Such a propagated signal may takeany of a variety of forms, including, but not limited to,electro-magnetic, optical, or any suitable combination thereof. Acomputer readable signal medium may be any computer readable medium thatis not a computer readable storage medium and that can communicate,propagate, or transport a program for use by or in connection with aninstruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmittedusing any appropriate medium, including but not limited to wireless,wireline, optical fiber cable, RF, etc., or any suitable combination ofthe foregoing.

Computer program code for carrying out operations for aspects of theinvention may be written in any combination of one or more programminglanguages, including an object oriented programming language such asJava, Smalltalk, C++ or the like and conventional procedural programminglanguages, such as the “C” programming language or similar programminglanguages. The program code may execute entirely on the user's computer(device), partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).

Aspects of the invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems) and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer program instructions. These computer program instructions maybe provided to a processor of a general purpose computer, specialpurpose computer, or other programmable data processing apparatus toproduce a machine, such that the instructions, which execute via theprocessor of the computer or other programmable data processingapparatus, create means for implementing the functions/acts specified inthe flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in a computerreadable medium that can direct a computer, other programmable dataprocessing apparatus, or other devices to function in a particularmanner, such that the instructions stored in the computer readablemedium produce an article of manufacture including instructions whichimplement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer,other programmable data processing apparatus, or other devices to causea series of operational steps to be performed on the computer, otherprogrammable apparatus or other devices to produce a computerimplemented process such that the instructions which execute on thecomputer or other programmable apparatus provide processes forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks.

This disclosure has been presented for purposes of illustration anddescription but is not intended to be exhaustive or limiting. Manymodifications and variations will be apparent to those of ordinary skillin the art. The embodiments were chosen and described in order toexplain principles and practical application, and to enable others ofordinary skill in the art to understand the disclosure for variousembodiments with various modifications as are suited to the particularuse contemplated.

Although illustrative embodiments of the invention have been describedherein with reference to the accompanying drawings, it is to beunderstood that the embodiments of the invention are not limited tothose precise embodiments, and that various other changes andmodifications may be affected therein by one skilled in the art withoutdeparting from the scope or spirit of the disclosure.

What is claimed is:
 1. A system comprising: a media device comprising afirst media device and a second media device; said first media devicecomprising one or more processors and instructions executable by the oneor more processors to: read a multi-resolution copy of an initial mediafile adaptively streamed to the first media device and comprising filesegments each having a resolution quality, the file segments comprisinga first file segment having a first resolution quality and the secondsegment having a second resolution quality, the second resolutionquality being different from the first resolution quality; employresolution quality information to the file segments to obtain at leastone replacement segment for the initial media file and to modify theinitial media file such that the first file segment retains the firstresolution quality and the at least one second file segment is replacedto match the first resolution quality; store a modified version of theinitial media file as a second media file comprising file segments allhaving the first resolution quality; and copy to the second media devicea media file comprising at least one file segment from the read mediafile corresponding to a single predetermined audio visual quality. 2.The system according to Claim 1, wherein said second media device isconfigured to obtain from a media source at least one file segment of aresolution quality not already present in the copied media file.
 3. Thesystem according to Claim 2, wherein the resolution quality of the atleast one file segment obtained by the second media device is determinedby said first media device.
 4. The system according to Claim 2, theresolution quality of the at least one file segment obtained by thesecond media device is determined by said second media device.
 5. Thesystem according to Claim 1, wherein the initial media file is read froma first media source.
 6. The system according to Claim 1, wherein theinstructions further comprise instructions executable by the one or moreprocessors to receive the initial media file from a second media sourceover a network, prior to reading the initial media file.
 7. The systemaccording to Claim 1, wherein the first media source is a single mediasource.
 8. The system according to Claim 1, wherein the instructionsfurther comprise instructions executable by the one or more processorsto employ an index file in obtaining the at least one replacementsegment.
 9. A method, comprising: reading, at a first media device, amulti-resolution copy of an initial media file adaptively streamed tothe first media device and comprising file segments each having aresolution quality, the file segments comprising a first file segmenthaving a first resolution quality and the second segment having a secondresolution quality, the second resolution quality being different fromthe first resolution quality; employing, at the first media device,resolution quality information to the file segments to obtain at leastone replacement segment for the initial media file and to modify theinitial media file such that the first file segment retains the firstresolution quality and the at least one second file segment is replacedto match the first resolution quality; storing, at the first mediadevice, a modified version of the initial media file as a second mediafile comprising file segments all having the first resolution quality;and copying, to a second media device, a media file comprising at leastone file segment from the read media file corresponding to a singlepredetermined audio visual quality.
 10. The method according to Claim 9,further comprising obtaining from a media source at least one filesegment of a resolution quality not already present in the copied mediafile.
 11. A computer program product comprising: a non-transitorycomputer readable storage medium having computer readable program codeembodied therewith, the computer readable program code comprising:computer program code configured to read, at a first media device, amulti-resolution copy of an initial media file adaptively streamed tothe first media device and comprising file segments each having aresolution quality, the file segments comprising a first file segmenthaving a first resolution quality and the second segment having a secondresolution quality, the second resolution quality being different fromthe first resolution quality; computer program code configured toemploy, at the first media device, resolution quality information to thefile segments to obtain at least one replacement segment for the initialmedia file and to modify the initial media file such that the first filesegment retains the first resolution quality and the at least one secondfile segment is replaced to match the first resolution quality; computerprogram code configured to store, at the first media device, a modifiedversion of the initial media file as a second media file comprising filesegments all having the first resolution quality; and computer programcode configured to copy, to a second media device, a media filecomprising at least one file segment from the read media filecorresponding to a single predetermined audio visual quality.